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n. An adrenergic drug, C9H13NO2, that is a powerful vasoconstrictor and is used to relieve nasal congestion, dilate the pupils, and maintain blood pressure during anesthesia.

n. An α-adrenergic receptor agonist; 3-(1-hydroxy-2-methylamino-ethyl)phenol, with the formula C9H13NO2.

n. a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion

"One study123 evaluated short-term phenylephrine therapy in hyperdynamic septic patients who were not hypotensive at the time of drug administration."

adrenergic drug    adrenergic